Behavioural Insights Projects
Discover projects applying behavioural science to policy from around the world. Add your own projects, whether completed or still ongoing, to contribute knowledge on BI applications across different countries, policy areas, and topics of interest.

Number of BI projects:
0
Legend: Projects status
- Pre-registered project
- Completed project
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BI Project
Finding ways to encourage collective action in contexts where only a minority adopts the desired behaviour is central to solving many of today's global environmental problems. We study how correcting people's beliefs about social norms and behavioural trends encourages collective action in a setting where the desired behaviour is not yet prevalent. In a field experiment, we test whether low sign-up rates for a municipal recycling program in urban Peru can be increased by providing information…
In a pre-registered experiment, we tested whether expert endorsement increases the effectiveness of debunking messages about COVID-19 vaccines. We monitored a sample of 2,277 people in Italy through a longitudinal study along the salient phases of the vaccination campaign. Participants received a series of messages endorsed by either medical researchers (experimental group) or by generic others (control). In order to minimise demand effects, we collected participants’ responses always at ten…
BI Project
Using behavioural science to empower Canadians to reduce the risk of wildfire to their homes and…
In line with the Government of Canada's National Adaptation Strategy, this project seeks to further understanding of Canadians’ awareness and adoption of measures intended to mitigate wildfire risk toward the end of supporting and empowering more widespread action. The study is a survey with an embedded randomized controlled trial component.
The survey component of the study aims to address questions such as:
1. What are the barriers to more widespread adoption of wildland fire risk reduction…
BI Project
Can Visual Cues to Portion Size Reduce the Number of Portions of Consumed? Two Randomized Controlled…
Methods
Two preregistered randomized controlled trials (N = 253 and N = 674) measured consumption in a lab and the home environment. Cues were salient, labeled stripes that demarcated single portions. Participants were randomized to cue condition or control. Consumption was measured without awareness.
Results
The main preregistered effect of the visual cue was not statistically significant. There was some variation by subgroup. In Study 1, men were more likely to eat the whole can of potato…
We seek to increase voluntary appearances for people with outstanding Warrants to Arrest (WTA) through reminder phone calls from Māori Wardens and Police. This Auckland-based project follows a proof-of-concept trial in the Eastern District, in which Māori Wardens made phone calls to people with outstanding WTAs and we compared voluntary appearances for those who were reached via phone to those who were not.
While this first trial showed indicative evidence that phone calls may be effective,…
BI Project
The Impact of Behaviorally Informed Communications on Uptake of a Cover Crop Cost-share Program
ideas24 partnered with the Practical Farmers of Iowa (PFI) to better understand the behavioral barriers preventing corn and soybean farmers from adopting cover crops and enrolling in PFI's cover-crop cost-share program. Using what we learned from administrative data, farmer interviews and direct feedback during user-testing, we then jointly designed behaviorally informed communication interventions, which included mailers as well as a farmer referral campaign. To evaluate the potential impact of…
In connection with the 2022 county elections, an experiment was conducted in Finland for the first time to examine the impact of text message reminders on the voting turnout of young people. In the experiment, young people (aged 18 to 29) were messaged twice about the schedule of the county elections and their right to vote. The aim of the study was to find out whether a text message reminder increases voting turnout. The experiment was carried out in cooperation with the Ministry of Justice and…
BI Project
Effective position of call-to-action: Is the response rate higher if the call-to-action appears the…
How can response rates to questionnaires be increased? In the first quarter of 2023, some of the participants in a CBS survey received a letter in which the call-to-action appeared as far as possible at the top of the letter. The other participants received standard letters. The analyses showed that the standard letters produced a significantly higher response rate than the letters in which the call-to-action was placed at the top.
Why this experiment was conducted: high response rate is…
PROJECT SUMMARY
Teachers in a summer school program for high school students provided brief, individualized, messages for parents with information about their child’s performance and behavior in school on a weekly basis.
IMPACT
Providing parents with individualized messages increased the probability a student earned credit for each class by 6.5 percentage points – a 41% reduction in failure rates.
BI Project
Energy savings achieved with energy consumption managers: what impacts does feedback have on…
A series of controlled randomised experiments was conducted to examine the savings effects for households of three types of energy consumption managers tools: an email + web application, an app installed on a smartphone or tablet and an in-home display. Energy savings could only be established for the in-home display: almost 7% on natural gas and over 2% on electricity consumption.
Why this experiment was conducted: The Netherlands' climate targets
Energy consumption by Dutch households…